a. Modified Production Rule Exceptions:

• Minimum midsection length – 12”. Aftermarket clamp and swivel brackets and motor mounts allowed.
• Aftermarket gearcase adapter plate allowed.
• Aftermarket tuner allowed
• Crankshaft lightening allowed
• Brucato PCU allowed
• OMC/Suzuki/Yamaha may use aftermarket Ignition/fuel injection including aftermarket injectors, fuel rails and necessary bosses. Must maintain OEM front half, intake and throttle bodies.
• Small gearcases allowed – no Speedmasters or OMC Clubfoots. Must be shiftable (minimum forward-neutral).
• Aftermarket internals (gears, bearing carriers, etc.) allowed.
  Any color SVS allowed with no weight penalty. For Laser style injection, any intake (SVS, MAD) allowed and stock throttle bodies may be bored.
• No limit on boring of airhorn.
  

Weights:

a. Modified Production Weights:

Mercury
1. 2.5 Racing Carb – 1225 lbs.
2. 2.5 Racing EFI – 1300 lbs.
3. 2.5 Laser/ProMax EFI – 1270 lbs.
4. 3.0 Laser/ProMax EFI – 1350 lbs.

OMC/BRP
1. 3.0 Carb – 1225 lbs.
2. 3.0 EFI – 1300 lbs.
3. 3.3/3.4 Carb – 1300 lbs.
4. 3.3/3.4 EFI – 1350 lbs.

Yamaha
1. 2.6 Carb – 1225 lbs.
2. 2.6 EFI – 1300 lbs.

Pro Gas Weights (add 50 lbs. for non-spec fuel to all weights)
Mercury
1. 2.5 based motors – 1350 lbs.
2. 3.0 based motors – 1400 lbs.

OMC/BRP
1. V6 motors – 1400 lbs.
2. V8 motors – 1475 lbs.

Yamaha
1. 2.6 based motors – 1350 lbs.
2. 3.1/3.3 based motors – 1400 lbs.